I did the hoilday skin lotion stuff as I had a backless dress and really bad "racer back" swim suit tan lines.
It rubbed off on my dress, you could still see the tan lines a bit in the photos...
But to be honest when I look back at my wedding photos 12 months ago I think I looked pretty fine if I do say so myself ... at least compared to how I feel now ie ...8 months pregnant, fat, bloated and white. I look at my fake tan stained wedding dress and just wish I could still fit it.
Have a great wedding day don't stress about anything and have the time of your life. But stay off those sun beds.